Mathematics, 06.06.2020 18:00 miya257916

A calibration laboratory has been measuring a one-kilogram checkweight by the same procedure for several years. They have accumulated several hundred measurements, and the SD of these measurements is 18 micrograms. Someone now sends in a one-kilogram weight to be calibrated by the same procedure. The lab makes 50 measurements on the new weight, which average 78.1 micrograms above 1 kilogram, and their SD is 20 micrograms. Assume the Gauss model. Required:
a. About how many micrograms is the standard error of one measurement?
b. About how many micrograms is the standard error of the average of 50 measurements?
c. Find a 90%-confidence interval for how many micrograms this new weight is above 1 kilogram.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 12:30

Matt and brian were solving a system of equations. they both noticed that the two lines had the same slope. brian said that because each line in the system had the same slope, the two lines had to be parallel, which meant the solution to the system was "no solution" matt disagreed, and said they should also look at the y-intercepts before determining how many solutions there were. who is correct?

Answers: 1

Answer

Mathematics, 21.06.2019 14:20

Ac contractor is building a new subdivision outside of the city. he has started work on the first street and is planning on the other streets to run in a direction parallel to the first. the second street will pass through (-2,4) find the equation of the location of the second street in standard form. a.2x+y=2 b. x-y=2 c.2x+y=2 d.x+y=2

Answers: 2

Answer

Mathematics, 21.06.2019 20:10

A. use the formula for continuous compounding with the original example: $1000 invested at 2% for 1 year. record the amount to 5 decimal places. use a calculator. b. compare it to the result using the original compound interest formula with n = 365 calculated to 5 decimal places. which has a larger value? explain.

Answers: 1

Answer

Mathematics, 21.06.2019 21:30

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

Answers: 2

Answer

You know the right answer?

A calibration laboratory has been measuring a one-kilogram checkweight by the same procedure for sev...

Questions

Mathematics, 04.02.2020 20:55

Vertical angles must: check all that apply...